textproduct: Quad Cities

KEY MESSAGES

- Quiet and pleasant weather expected today and Sunday with high temperatures in the lower to mid 70s.

- There is an Enhanced (level 3 out of 5) Risk for severe thunderstorms on Monday and Monday night with all modes of severe weather possible.

- Cooler temperatures are forecast Tuesday through Friday.

SHORT TERM /THROUGH TONIGHT/

Issued at 208 AM CDT Sat Apr 25 2026

High pressure centered across the region will continue to bring quiet, pleasant weather to the area through tonight. Morning clouds are possible in northwest Illinois north of Interstate 80 as clouds over southern Lake Michigan expand westward prior to sunrise. Abundant sunshine today will push high temperatures into the lower to mid 70s. Clouds will increase across the area Saturday but low temperatures will be similar to this morning with temperatures in the 40s.

LONG TERM /SUNDAY THROUGH FRIDAY/

Issued at 208 AM CDT Sat Apr 25 2026

On Sunday, the flow aloft across the area will become more southwesterly as 500 MB ridging builds to our east and the closed 500 mb low over Saskatchewan and Manitoba wobbles northeastward. It will be quiet through the day on Sunday with temperatures slightly warmer than Saturday with high temperatures once again in the lower to mid 70s.

Sunday night, a shortwave trough is forecast to move from the Great Basin into the Plains with several disturbances ejecting towards the area ahead of that trough. A low level jet of 30 to 40 knots will develop to our west Sunday evening and veer across the area overnight leading to moisture and warm advection across the area. This will also lead to the development of showers and thunderstorms across the area overnight into Monday morning.

On Monday, a negatively tilted shortwave is forecast to lift from Colorado/Kansas northeastward into the Great Lakes by 12 UTC on Tuesday with the surface low following a similar path. The 00z GFS has trended farther to the south with the surface low into Missouri while the ECWMF, Canadian, and NAM have the surface low lifting into Minnesota The track of the surface low will impact moisture and instability across the area on Monday with a more southerly surface low pushing the instability to the south and east of the area. Deterministic models show at least moderate instability developing Monday afternoon/evening across the warm sector, along with strong deep layer shear as an upper jet overspreads the warm sector ahead of a surface low. Machine learning guidance (NCAR/NSSL/CSU) has the highest severe weather probabilities shifting southeastward with the 00z run. With that said, SPC has a level 3 of 5 risk across the entire outlook area for Monday. While the details are unclear this far out, all severe weather hazards will be possible with favored timing of the strongest storms during the afternoon and evening. Stay tuned to the forecast through the weekend!

Tuesday On: Broad trough is forecast to move into the eastern two thirds of the CONUS. The current forecast is dry for Tuesday and Wednesday. Deterministic models and ensembles show a more developed wave diving into the Upper Midwest Thursday into Thursday night with low chances for rain. Temperatures during this period will be near normal for the end of April with high temperatures in the upper 50s to mid 60s and lows in the upper 30s to lower 40s.

AVIATION /18Z TAFS THROUGH 18Z SUNDAY/

Issued at 1207 PM CDT Sat Apr 25 2026

Winds will remain 10 knots or less through 18z/26 and will slowly become more east southeast after 12z/26. An isolated gust up to 20 knots is possible through sunset Saturday.

DVN WATCHES/WARNINGS/ADVISORIES

IA...None. IL...None. MO...None.